Garmin Ltd. - Google Finance
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I bought a GPS unit for my parents, because my parents can actually use it (and they do). The same can't be said for an Android cell phone. I don't think the Android announcement is as much of a threat as the stock plunge suggests.
Garmin GPS's do have easy to use interfaces - but why do you think the android map won't be?
Basically, traditional 'non-connected' GPS driving aids just became obsolete today. It'll be hard for Garmin/Tom-Tom to compete without the infrastructure google has built around maps/street-view, or licensing it.
Vol / Avg. 11.07M/1.87M
Come to think of it, this drop probably has a lot more to do with TomTom's earnings than it does Google.
I don't see any IPX7 rated Android devices, tho', that's the bare minimum for a GPS for real outdoor use.